Feeler-bar-securing screw



W. E. GRAIN FEELER BAR SECURING SCREW Oct. 12,1926. 1,603,195

Filed March 10. 1925 WE 69nd,

8 muewboz by the'upper portion of the conical head of Patented Oct; 12, 1926.

UNITED STATES renaiss- PAT ENT GET ME WILL-rm EfoRAIN, or sIMrso vIL n soUTH C R LINA, AssIeivon T0 BOHAN TEX- TILE MACHINERY COMPANY, or 'GBEENVILLE, SOUTH CAROLINA.

rnELEn-BAa-sncUnme 'scnnw.

Application filed March 10, 1923. Serial No. 624,153.

This'invention relates to feeler bar securing screws for looms.

It is a well kno n fact that feeler'bars are secured to their stands by bolts having threaded shanks and :conical heads, the bolts being fitted through "a countersunk opening in the feeler bar which opening is occupied the bolt,the shank of thebolt being threaded into a threaded socket in the stand and the lower portion of the conical head ofthe bolt occupyingthe upper'end of is'aidsocket which is flared to accommodate this portion of the said head, but this construction presents the disadvantage that' after a relatively short period of use the walls of the openings in the feeler bars become so worn that the screw heads no longer serve their purpose of securing'the bar 1n place upon the respectlve stands and, therefore, a greateror less portion of the length of the bar becomes dis-;

' above and which screw of the present invendetails of construction hereinafter described and claimed, 7 it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the'drawing Figure 1 is a sectional view through a V feeler bar and stand to which the feeler bar is secured, the screw for securing the feeler bar being shown in elevation.

Figure 2 is aneievationa'lview' of the screw, the head thereof being shown in sec 'tion.

' Referring'to the drawing .in detaiL the" reference character 5 designates the usual supportingstand secured to'the' frame of a loom to which the' feeler bar which in the present -showing,is indicated" at-6,-is secured. The support '5'is formed with a suitable threaded opening indicated at 7, which opening registers "with an opening inthe feeler barthr'oughwhichthe 'usual securing bolt passes 'to'secuie the feeler bar to its stand. hen the opening of the feeler bar -'be-, comes wornt'o such a degree as'to renderthe feeler *b ar inoperative to accomplish its purpose, a bolt, such as indicated by-FigureQ',

and which forms the essence of the present invention, is employed in lieu of the usual securing bolt;

As shown, this bolt includes a body portion indicated at 8, which is threaded to cooperate with the threads ofthe stand 5 or walls of opening? formed therein for drawing the head 9 of the bolt towards the stand 5 and consequently move the feeler bar 6 into close engagement with its stand.

The head 9 is formed with a flange 10 the outer surface thereof being curved and provided with beveled edges, the under surface of the head being designed to contact with the upper surface of the feeler bar 6. as

' clearly shown by Figure 1 of the drawing to exert an even pressure on the feeler bar at a point adjacent to the bolt opening thereof and prevent splitting ofthe feeler bar at this point.

The head is formed with a tapered wall 11 merging into the body portion 8, whereby the bolt will occupy the usual worn bolt opening in such a manner as to restrict movement of the feeler bar With respect to I the stand.

' In practice, the threaded shank of the v screw. and the conical head portion 11 there-' of will, of course, be made ofthe same dimensions as the shank and head of the standard or ordinary screw, and inasmuch as themaximum or major diameter of the conical head of the ordinary screw isof substantially the same diameter as the opening which is present in the feeler bar and which 1 head of the ordinary screw and this wearing away reduces the opening to cylindrical form rather than the usual tapered or countersunk form. Therefore, when the screw of the present invention is employed, andas clearly shown in Figure 1 of the drawings, the upper end of the conical head portion 11 will engage in the opening in the feeler bar 6 in such a manner as to prevent any displacement of the feeler bar with respect to the axis of the screw, the head 9 of the screw hearing at its flat under side against the upper side of the ieeler bar about the worn opening and serving to-secure, the bar in place as firmly as it was originally held by the ordinary screws.

hat is claimed as new is:-

1. The combination with a loom feeler bar stand and a feeler bar supported thereon, the stand having a threaded socket the upper end of: which is flared and the feeler bar having an opening therein, of a screw for securing the bar to the stand comprising a threaded shank fitting the said socket, a tapered head portion at the upper end of the shank fitting in the flared upper end of 'said tapered head" portion having its periphery projecting therebeyond and bearing against the upper side of the feeler bar about the said opening,ithe tapered portion of the screw having a major diameter substantially equal to the major diameter of the opening in the bar, whereby to prevent displacement of the bar with relation to the axis of the screw. c g 1 2. As a new articleof manufacture, a screw for securing the feeler bar of a loom to its supporting stand, comprising a threaded shank and a substantially conical head portion at the end thereof of the same dimen-' sions as the threaded shank and head of the standard screw so employed, and a head at the major end of the conical head portion projecting circumferentially thereloeyond.

In testimony'that I claim the foregoing as my own, I have hereto aflixed my signature.

XVILLIAM E. GRAIN. 

